<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>实现盒子垂直水平居中</title>
    <style>
        div{
            /* position: relative; */
            width: 500px;
            height: 500px;
            background-color: skyblue;
            display: flex;
            
        }
        p{
            /* position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%,-50%); */
            margin: auto;
            width: 200px;
            height: 200px;
            background-color: pink;
        }
    </style>
</head>
<body>
    <div>
        <p></p>
    </div>
</body>
</html>